This is my son, his velocity has seemed to hit a plateau last two seasons, most likely due to the 4-5 feet added each year from mound to plate. He’s 10 (11 end of march); Playing 11u and the mound is 55 feet. YIKES…
Anyway, he’s got solid control and decent movement. ~75% k/b ratio. Change is 10mph less. I think with some tweaking (solid advice) he could start adding to his fast ball, as he starts to get taller.
reg speed - then super slow mo - regular speed - then super slow again. I snapped this video after he finished through about 45 pitches, 1 take, that was it, tried to catch his real motion, not prettying it up for the iphone.